Method floorDiv

base/src/main/java/net/time4j/PlainTime.java:2056–2067

(
        long value,
        long divisor
    )

    }

    private static long floorDiv(
        long value,
        long divisor
    ) {

        if (value >= 0) {
            return (value / divisor);
        } else {
            return ((value + 1) / divisor) - 1;
        }

    }

    /**
     * @serialData  Uses <a href="../../serialized-form.html#net.time4j.SPX">